Track link



E ASUA 78 Filed Aug. 15, 1918 W" fj gil if m m mull!!! IN VEN TOR.

earge T riiz an MWW ATTORNEYS l mented Apr. 3,

GEORGE r. ARTHUR, or STOCKTON, cnmronms. ASSIGNOR TO THE HOLT mnncrlic TUBING COME'ANY, OF STOCKTON. CALIFORNIA. A CORPORATION TRACK LINK.

Application filed August 15, 1918. Serial No. 249,948. 3

T 0 all whom. it may concern.

Be it Known that I, Grouse T. ARTHUR. a citizen of the United Eitates, residing, at Stockton. in the county of San Joaquin and State oE California. have invented new and useful Improvements in Track Links. of which the following is a specification.

'lhi. inve relates to a track link adapted to form a part of a. chain track tor tractors.

It is theprincipal object of this invention to provide a chain track for tractors of the self-laying track type which is formed of a series of articulated links. each of which has an individual oil reservoir by which the link pins and their antii'riction hearings may be lubricated ping at their adjacent ends to form a continuous track surface.

The invention is illustrated by way of example in the accompanying drawings in which-- Fig. 1 is a sectional View on the line 1-1 of Fig. 2., disclosing the coinplctely assembled links and indicating the grouser plates in section.

Fig. 2 is a View in plan, illustrating the elements shown in Fig. l and further disclosing the hearing afforded the link pins.

Fig. 3 is a View in section, as seen on the line 3-3 of Fig. 2.

F 4. is an enlarged view in disclosing one of the links.

Referring niore'oarticularly to the drawings. it) indicates link block, the central portion of which is substantially rectangular in shape and thus forms an oil reservoir 11. This reservoir may he .ed with a lubricant through an opening 12. normally closed by a screw plug 13. At one side of the block is a central hearing 14 through which a link pin i5 is mounted. The hearing has a bore of larger dimensions than the diameter of the pin and thus acoitnniodatcs a series of antiirivtion rollers 16, particularly shown in Fig. 2-3 as supporting the pin. These rollers are positioned within a cage 17, held in place by a set-screw 18. The cage is fitted at its opposite ends with dust-proof packing rings 19. An opening is formed through one side of the cage and is in register with an oil duct perspective,

g the links being further construct ed with removable grouser plates overlap in elevation taken OF CALIFORNIA.

The opposite end of each of the hlochszis...= formed with a pair of pi'qecting lugs and 22 which are spaced in relation to each other to receive the bearing ll. These lugs extend alongside the main body of the hloclcsx;

and are curved downwardly at their oppoe.

site ends to form a toothed pocket'23 t'orr sprocket teeth, as indicated. by dotted lines in l? 1g. 1. The upper faces of the lugs'gandi. their extensions are face ot the block and thus form a continu ous rail over which the truck rollers of the tractor may pass. The lugs 21 and 22 are suitably bored to accommodate the oute ward y promoting ends of the pin and in the same plane-as theare a.-.so formed with a transversegroove 24.

This groove extends across each oi the lugs and through the central axis of each bore.

Lock pins 25 through slots in and thus will hold the pins against rotation. This will fix the pins to more with the lugs. and will insure that the hearing 14. will .rotate around the pin.

are adapted to be driven the outer face 1 the ends. of the hingepins At the opposite sides of the main hear ing block are formed outwardly extending cars 26, through which bolt-holes are made lhese ears are adapted to receive fastening bolts 27 which pass through the grouser plates 28. These plates may he formed of any desired configuration, but are here shown as having a pair of laterally extend ing: cleat t'acis 29, hetween which the bolt 27 occurs. The opposite ends of the plates extend upwardly and terminate in arcuate portions concentric with the axis of the link pins. The contiguous ends oi the grousers also overlap, as clearly shown in Fig. l. and thus protect the hinge joint of the links from dirt and other foreign substance.

In operation. the links are assembled to form a continuous chainwhich easily passes .over idler wheels at the forward end oi tinuous operation of the links and their change in position during their course of travel will cause oil from the reservoir to pass through the ducts 20 and lubricate the roller bearings included Within the bearing 14 ofeach link.

' It will thus be seenthat the link structure here disclosed is simple and that it may comprising a rectangular alaterally extending ,bearing through the opposite endther'eof and in communicatlon with the reservoir, a pair olongitudinally extending lugsformed atthe opposite end for the ends of the hinge pin, and engaging;

pockets for the driving sprockets of the truck, and means for locking the pin against rotation in relation to the extending portions.v 7

2. A track link comprising a rectangular body .portion, an oil reservoir in one .end thereof, a laterally extending bearing through the opposite end thereof and in communication with the reservoir, a pair of a longitudinally extending lugs formed at the rotation in relation to the oppositeendof the block providing bearings for the ends of the hinge pin'and engaging pockets for. the driving sprockets of the truck. means for locking the pin against ing member desire to secure by Letters Pat-- ets to receive a tooth of a oil reservoir in one end of the block providing bearings ing link such as to form extending ,por-

tions, and a removable grouser plate secured to, the under face of each of the links. I 3. A track chain comprising a series ,of connected links, each link having a filled in central body portion, a bearing member centrally arranged on one end of said body portlon, apair of spaced bearing members on the opposite end of the body portion between which the centrally arranged bearon the adjacent link fits, and a shoulder on each side of each link forming in conjunction with the overlapping ends of the adjacent link, recesses or pocksprocket wheel. 4. A track chain comprising a series of connected links, each having a body portion, an attenuated'end on the body portion provided with a transverse opening, the attenuation being such as to leave a shoulden-at each side of. the body portion, bifurcate'd; members on the opposite end of the body portion also provided with transverse openings, the attenuated end of one link being adapted to fitbetween the bifurcated ends on the adjoining link, a pin passing through the openings in said ends for connecting adjoining links together, said links when assembled having a space between each of the adjoinpockets or recesses to receive the teeth of a sprocket wheel.

In testimony whereof I have hereunto set my hand in the witnesses.

bifurcated end and a shoulder GEORGE T'. ARTHUR. Witnesses F. W. Tana, F. A, WEAVER.

presence of two subscribing 

